HFO-1234yf inhibited solutions
The present invention provides a composition comprising 2,3,3,3-tetrafluoropropene and γ-terpinene useful in automotive air conditioning systems and devices, commercial refrigeration systems and devices, chillers, residential refrigerator and freezers, general air conditioning systems, heat pumps, and the like.
1. A composition consisting essentially of HFO-1234yf and γ-terpinene.
2. The composition of claim 1 wherein the composition consists of HFO-1234yf and γ-terpinene.
3. The composition of claim 1 wherein the γ-terpinene is present in an amount of at least about 0.0001 percent by weight-based on the amount of HFO-1234yf and γ-terpinene present in the composition.
4. The composition of claim 1 wherein the γ-terpinene is present in an amount of from 0.0001 to about 1 percent by weight based on the amount of HFO-1234yf γ-terpinene present in the composition and wherein said composition has a Non-Volatile Residue (NVR) value less than 100 ppm after storage for a period of 30 days at a temperature of about −10° C.
5. A method of inhibiting the formation of HFO-1234yf polymerization products comprising combining γ-terpinene and said HFO-1234yf to produce a composition having a Non-Volatile Residue (NVR) of the HFO-1234yf less than 0.01 weight percent (100 ppm).
6. A container containing a composition comprising HFO 1234yf and γ-terpinene and having thereon a threaded valve with a cumene hydroperoxide containing sealant on the threaded valve.